Possible combinations of numbers for 3,4,5,6,7 (up to 9?)

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Discussion Overview

The discussion centers around finding software that can generate all possible combinations of numbers from a specified set, particularly focusing on combinations of sizes ranging from 3 to 9, drawn from a larger set of up to 99 numbers. The inquiry includes requirements for the software to number the combinations and allow for printing and exporting to a tab-delimited text file.

Discussion Character

  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • The original poster (OP) seeks a downloadable program that can generate combinations of numbers and has specific features such as ordering and export capabilities.
  • One participant expresses confusion about the OP's request and asks for clarification or examples to better understand the problem.
  • Another participant interprets the OP's request as relating to the mathematical concept of combinations, specifically the formula for combinations, denoted as $$n \choose r$$.
  • A participant mentions that the original software by Gordon Gonsalves is still available online and appears to be free, although they have not tested it.
  • The OP confirms the mathematical formula for combinations and reiterates their need for a program that can handle larger sets and export the results, while also expressing frustration with the limited options available on the website.

Areas of Agreement / Disagreement

There is no consensus on the specific software solution, as participants have differing levels of understanding of the OP's request and the availability of existing programs. The discussion remains unresolved regarding the best approach to meet the OP's needs.

Contextual Notes

Some participants have not verified the mathematical claims made regarding the number of combinations, and there is uncertainty about the functionality of the software mentioned.

AlexFX
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Hello everyone.
Thanks for this amazing forum.
I hope I can be forgiven for asking for a software problem rather than a topic specific puzzle.
I am looking and happy to pay for a downloadable program I can run from my desk top which will return all possible combinations of numbers for 3,4,5,6,7...(up to 9?) from any given set of numbers (up to 99?), Generated combinations should be numbered/ordered from 1-X.
Generated combinations and sub-sets should be printable and exported to a tab-delimited text file.
Can anyone please lead me in the right direction?

I had a real nifty little program called... Combinations! by Gordon Gonsalves on my laptop (OS: XP) but my laptop bit the dust without notice.
It would for instance return 8,145,060 combinations (6,45) in a few seconds.

Gordon is no longer selling/ providing support so if anyone can help I would be in your debt.
Many thanks for time and attention.
Alex
 
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I don't really understand what you are asking for. To the extent that I can understand it, it sounds rather trivial so I'm probably missing something. Can you give examples or something to further explain?
 
I'm guessing that the OP is asking about the number of combinations of n things taken r at a time, where n can be up to 99 or so, and r can be up to 9.

In symbols, this would be
$$n \choose r$$

What he's saying, I think, is that $$ {45 \choose 6} = 8,145,060$$
but I haven't verified this.
 
Last edited:
The website is still there, and it appears the programs are now free. I didn't actually try the programs or check for viruses.

http://ggonsalves.com
 
Correct.
The formula for combinations (not permutations) would be 45!/[(45-6)!(6!)] = (because the order or the sequence does not matter) =8,145,060.

I'm looking for a program which would generate all possible combinations for different variables
up to 99!/[(99-9)!(9!)], exportable to a tab-delimited text file.

rcgldr, thanks, I know the website is still up but the free downloads are very limited, and Gordon has left the receiver off the hook.

I imagined there might be someone here on the forum who could help.
Thanks for time and attention and pardon if I've used up precious time.
 

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